Killeen, Texas climate: Normal weather by month, frost dates and records
Killeen's normal year runs from 36°F January nights to 97°F August afternoons, with 34.8 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 19.2°C, January lows of 2°C, August highs of 36°C, 883 mm of precipitation a year.
- NOAA stationKilleen
- Station IDUSC00414792
- Location31.07°N 97.69°W
- Elevation815 ft (248 m)
- Population160,616
On October 23, the normal high in Killeen is 77°F and the normal low 54°F, and the chance of measurable rain or snow is 23%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Killeen.
- Jan 60° 36°
- Feb 63° 40°
- Mar 70° 47°
- Apr 77° 54°
- May 84° 63°
- Jun 92° 70°
- Jul 96° 72°
- Aug 97° 73°
- Sep 90° 67°
- Oct 80° 56°
- Nov 69° 46°
- Dec 60° 38°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Killeen each month?
August is the warmest month, with normal highs of 97°F; January the coldest, with normal lows of 36°F. The most precipitation falls in May (4.70 in), the least in August (1.64 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 60°F | 36°F | 47.8°F | 2.45 | 7 | <1 | 11 | 10 h 20 min |
| February | 63°F | 40°F | 51.5°F | 2.16 | 7 | <1 | 5 | 11 h |
| March | 70°F | 47°F | 58.5°F | 3.27 | 8 | <1 | 3 | 12 h |
| April | 77°F | 54°F | 65.3°F | 2.15 | 6 | 1 | <1 | 12 h 50 min |
| May | 84°F | 63°F | 73.4°F | 4.70 | 7 | 8 | <1 | 13 h 40 min |
| June | 92°F | 70°F | 81.0°F | 3.21 | 6 | 19 | <1 | 14 h 10 min |
| July | 96°F | 72°F | 84.0°F | 2.74 | 4 | 28 | <1 | 14 h |
| August | 97°F | 73°F | 84.6°F | 1.64 | 4 | 28 | <1 | 13 h 20 min |
| September | 90°F | 67°F | 78.2°F | 3.89 | 6 | 16 | <1 | 12 h 20 min |
| October | 80°F | 56°F | 68.0°F | 3.42 | 6 | 4 | <1 | 11 h 30 min |
| November | 69°F | 46°F | 57.6°F | 2.72 | 6 | <1 | 4 | 10 h 40 min |
| December | 60°F | 38°F | 49.3°F | 2.40 | 7 | <1 | 8 | 10 h 10 min |
| Year (annual) | 78°F | 55°F | 66.6°F | 34.75 | 75 | 105 | 31 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 15°C | 2°C | 8.8°C | 62 mm |
| February | 17°C | 4°C | 10.8°C | 55 mm |
| March | 21°C | 8°C | 14.7°C | 83 mm |
| April | 25°C | 12°C | 18.5°C | 55 mm |
| May | 29°C | 17°C | 23.0°C | 119 mm |
| June | 33°C | 21°C | 27.2°C | 82 mm |
| July | 35°C | 22°C | 28.9°C | 70 mm |
| August | 36°C | 23°C | 29.2°C | 42 mm |
| September | 32°C | 19°C | 25.7°C | 99 mm |
| October | 27°C | 14°C | 20.0°C | 87 mm |
| November | 21°C | 8°C | 14.2°C | 69 mm |
| December | 16°C | 3°C | 9.6°C | 61 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00414792; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Killeen?
Normal highs sit between 65°F and 85°F in March, April, May, October and November. Of those, April has the fewest days with rain (6).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00414792.
When is the last frost in Killeen?
In Killeen, the last spring frost (32°F) comes after March 14 in half of years and after April 4 in one year in ten; the first autumn frost comes before November 17 in half of years and before November 1 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- March 141 year in 10 after April 4; 9 in 10 after February 24
- First autumn frost, half of years before
- November 171 year in 10 before November 1; 9 in 10 before December 6
NOAA puts the median frost-free season at 247 days, and the season without a hard freeze (28°F) at 271 days.
A hard freeze (28°F) comes after March 2 in half of springs and before November 30 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Killeen in zone 8b across its 4 ZIP code areas (8b in 76542, the largest).
Frost dates for every NOAA station in Texas · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00414792; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
What hardiness zone is each Killeen ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. Killeen's 4 ZIP code areas are all in zone 8b. Each ZIP's frost dates are in the frost tool.
Source: USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; ZIP areas in the place: Census Bureau 2020 ZCTA-to-place relationship file. A ZIP area counts when at least a tenth of its land (and 0.5 km²) lies in the place.
How hot and how cold does it get in Killeen?
In a normal year in Killeen, 105 days a year reach 90°F (18 of them 100°F or more), 31 nights fall to 32°F or colder and 75 days bring measurable precipitation.
- Days at 90°F or more
- 105a normal year
- Days at 100°F or more
- 18a normal year
- Nights at 32°F or colder
- 31a normal year
- Days that stay below freezing
- 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 75a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00414792.
How sunny is Killeen?
Over a year 80% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Killeen, 4.8 kWh per square metre a day. July is the sunniest month (88%) and February the cloudiest (70%). Among the 459 U.S. places of 50,000 or more, that ranks tied 125th (with 50 others) in sunshine.
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 75% | 3.0 |
| February | 70% | 3.5 |
| March | 73% | 4.5 |
| April | 76% | 5.5 |
| May | 76% | 5.9 |
| June | 85% | 6.8 |
| July | 88% | 6.8 |
| August | 88% | 6.3 |
| September | 83% | 5.2 |
| October | 81% | 4.2 |
| November | 77% | 3.2 |
| December | 74% | 2.7 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Killeen need?
A normal year in Killeen brings 2,072 heating degree days, 61% fewer than the median U.S. place (5,373), and 2,683 cooling degree days, 3.0 times the median (908). Three months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 6,526 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 536 | 3 |
| February | 387 | 9 |
| March | 236 | 33 |
| April | 80 | 89 |
| May | 12 | 273 |
| June | 0 | 478 |
| July | 0 | 589 |
| August | 0 | 609 |
| September | 5 | 400 |
| October | 66 | 161 |
| November | 257 | 35 |
| December | 492 | 4 |
| Year (annual) | 2,072 | 2,683 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00414792. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
How does Killeen's climate compare?
Killeen is warmer than 191 of the other 320 places with their own NOAA record in Texas, and wetter than 181. Across the 7,247 U.S. stations with normals, its annual mean of 66.6°F is warmer than 91%.
In the Köppen classification computed from these normals, Killeen is Cfa: temperate, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Killeen share this climate record?
5 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Copperas Cove, TX39,627 people · 14 mi W
- Harker Heights, TX35,263 people · 3 mi E
- Fort Hood, TX25,786 people · 7 mi NW
- Nolanville, TX7,395 people · 5 mi E
- Briggs, TX69 people · 18 mi SW
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Killeen's climate
What is the coldest month in Killeen?
January, with a normal high of 60°F and a normal low of 36°F. The warmest is August (97°F by day, 73°F at night).
Does it snow in Killeen?
Rarely: NOAA's normal is no measurable snow a year.
What is the rainiest month in Killeen?
May, with 4.70 in of precipitation in a normal year; the driest is August with 1.64 in.
What plant hardiness zone is Killeen in?
The USDA's 2023 map puts Killeen in zone 8b across its 4 ZIP code areas (8b in 76542, the largest).
How late can frost come in Killeen?
In half of years the last 32°F night comes after March 14; in one year in ten it comes after April 4. Waiting until April 4 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Killeen in OctoberThis month day by day, its records and recent years
- Texas climateThe statewide normals and every place in the state
- Stillhouse Hollow Dam, TX10 miles from this station, 66.6°F a year
- Gatesville, TX24 miles from this station, 66.5°F a year
- Georgetown, TX27 miles from this station, 67.1°F a year
- Lampasas, TX29 miles from this station, 66.0°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made